Home / 127,345.70-175,790.94-85,961.72

Finding the Fourth Proportional to 127,345.70, 175,790.94 and 85,961.72

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Solution

The fourth proportional to 127,345.70, 175,790.94 and 85,961.72 is: 118,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,345.70 : 175,790.94 = 85,961.72 : x
  2. Step 2: Convert to fraction form
    127,345.70/175,790.94 = 85,961.72/x
  3. Step 3: Cross multiply
    127,345.70x = 175,790.94 × 85,961.72
  4. Step 4: Simplify right side
    127,345.70x = 15,111,290,361.51
  5. Step 5: Solve for x
    x = 15,111,290,361.51/127,345.70
  6. Step 6: Final answer
    x = 118,663.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.